1. Deva, B.C.: Musical Instruments of India: Their History and Development, 2nd edn. Munshiram Manoharlal, New Delhi (1987)
2. Raman, C.V.: On some Indian stringed instruments. Proc. Indian Assoc. Cultiv. Sci. 7, 29–33 (1921)
3. Burridge, R., Kappraff, J., Morshedi, C.: The sitar string, a vibrating string with a one sided inelastic constraint. SIAM J. Appl. Math. 42(6), 1231–1251 (1982)
4. Taguti, T.: Dynamics of simple string subject to unilateral constraint: a model analysis of sawari mechanism: acous. Sci. Tech. 29(3), 203–214 (2008)
5. Vyasarayani, C.P., Birkett, S., McPhee, J.: Modeling the dynamics of a vibrating string with finite distributed unilateral constraint: application to the sitar. J. Acous. Soc. Am. 125(6), 3673–3682 (2009)